308E CR Mini Hydraulic Excavator Machine System Specifications Caterpillar


Boom Cylinder

Usage:

308E GBJ



Illustration 1g02901136

Table 1
Specification for 388-4093 Boom Cylinder and Lines Gp    
Item     Qty     Part     Specification Description    
1     1     239-7709 Bushing     Bore diameter after assembly is
55.079 to 55.178 mm (2.1685 to 2.1724 inch).    
2     1     382-5821 Bolt     Torque to
128.0 ± 12.8 N·m (94.4 ± 9.4 lb ft).    
3     4     6V-5215 Bolt     Torque to
17.2 ± 1.7 N·m (152.2 ± 15.0 lb in).    
4     2     239-7708 Bushing     Bore diameter after assembly is
60.098 to 60.187 mm (2.3661 to 2.3696 inch).    
5     4     8T-0338 Bolt     Torque to
17.2 ± 1.7 N·m (152.2 ± 15.0 lb in).    
6     4     8T-0341 Bolt     Torque to
24.5 ± 2.5 N·m (216.8 ± 22.1 lb in).    
7     1     382-5746 Head     Torque to
902 ± 90 N·m (665 ± 66 lb ft).    
8     1     382-5753 Piston     Torque to
1177 ± 118 N·m (868 ± 87 lb ft).    
9     1     9X-6279 Socket Setscrew     Torque to
19.6 ± 2.0 N·m (173.5 ± 17.7 lb in).    
B     1     382-5744 Boom Cylinder As     Bore is
110 mm (4.3 inch).    
C     1     382-5745 Rod As     Diameter is
70 mm (2.8 inch).    
10     -     -     Torque to
24.5 ± 2.5 N·m (216.8 ± 22.1 lb in).    

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